When you are nesting a sheet of material that contains multiple parts for the router table, I like to create a drawing of the layout and put all of the part numbers on top of all the parts and indicate the WCS origin. Right now I have to do some workarounds to get this custom image onto the setup sheet.
In the same way you right click on an operation to set the custom setup sheet, it would make sense to be able to right click on the Setup to do the same.